Crusher



Patented Feb. 3, 1920.

CRUSHER.

APPLICATION FLLED JUNE 18. I919.

L. J. HEWES.

Inventor Lezaz'o'J HGMGJ ya ,44%; M r {M Jig/:

UNITED STATES PATENT OFFICE.

LEWIS JULIUS HEWES, 01?

OAK PARK, ILLINOIS, ASSIGNOR 'I'O TRAYLOR ENGINEERING & MFG. 00., OF ALLENTOWN, PENNSYLVANIA, A CORPORATION OF DELAWARE.

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Specification of Letters Patent.

Patented Feb. 3, 1920.

Application filed June 18, 1919. Serial No. 305,150.

crusher frame.

The invention aims to provide a rigid support for the upper end of the shaft which can be easily and quickly removed, which will offer a minimum amount of obstruction to the feeding to the crusher of the material to be, operated upon, and eliminate the necessity for a hopper which will enable the concaves to be removed, and replaced without requiring removal of the shaft support, and which will not have any tendency of the center bearing to rock.

With these and other objects in view the inventionincludes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims.

An embodiment of my invention is illustrated in the accompanying drawings, in which, Figure 1 is a transverse sectional view.

Fig. 2 is a partial section on a line at a slight angle to Fig. 1.

Fig. 3 is an enlarged partial plan View.

Referring by reference characters to thls drawin the numeral 1 designates the annular rame member provided with the crushing concaves 2 and 3, the gyratory shaft carrying the crushing cone i, wh1ch parts, except as hereinafter speclfied, may be of the ordinary or any desired construction.

The frame member 1 is provided with an upwardly and outwardly flared or inclined rim 1, which serves to deflect the materlal to be crushed into the space between the cone and concaves. At diametrically opposite points this rim is provided with upwardly extending side and end walls 1 and 1" respectively, the said walls being flared upwardly to form tapered seats to receive the correspondingly shaped ends 5* of the cross bar 5, which is provided intermediate of its ends withthe shaft supporting hub 5 in which the shaft may be secured in any desired manner.

The ends of the arms are machined to fixed dimensions so that any cross bar will fit any crusher frame of the particular size, and insure.interchangeability, and in order to provide a perfect fit and prevent any possibility of the bar ends moving in their seats, I provide the seats with bearing surfaces of a softer metal 6, preferably zinc which is anchored to the frame so as not to be ruptured when the bar is removed.

In order to obtain the proper fit and prevent any movement or creeping of the bar ends in the seats a certain amount of draft is allowed on the taper sides which is obdistance above its home position and then pouring molten zinc into the space between the ends of the bar and the walls of the seat. The bar is then removed, the blocks taken out and when the bar is replaced it will have the proper draft allowance due to the taper construction. This draft is applied vertically to the bar ends by means of bolts 7 passing downwardly through the bar ends and through the frame.

In order to locate the bearing in proper position relative to the frame the bar is providedwith downwardly extending arcshaped. lugs or shoulders 5 which are machined to fit the inside edges of the bottoms of the bearing recesses, which fit, being cylindrical, is not affected by the draft allowance hereinbefore referred to.

In order to effect the removal of the bar when desired I provide slot-s 1 in the outer walls of the bearing recesses through which wedges may be driven beneath the bar ends to force them out of their seats. The bars of the largest crushers are removed by means of jack screws or hydraulic jacks applied from below for which arrangements are provided.

It will be noticed that the bearing recesses or pockets are extended above the fulcrum point of the shaft, which overcomes any tendency for the bearing bar to rock, the stresses being taken care of in straight lines.

It will be further noted that the bar pockets are as close as possible to each other, the bar being comparativel short resulting in the most rigid construction. The pocket walls are so shaped as to offer the least ebstruction to the feeding of rock to the crusher and at the same time provide a secure support for the bar.

Having thus described my invention what I claim .is: v

1. In a gyratory crusher of the class described the comblnation with the crusher wall or frame and gyratory shaft, of a supporting member for the crusher shaft comprising a bar having a hub in the center m which the shaft is suspended, and tapered end portions fitting in tapered seats carried by said frame.

2. In a crusher of the class described the combination with a crusher wall or frame,

of a supporting'member for the crusher rim and having diametrically arranged upstanding flanges having upwardly inclined walls forming tapered seats, said seats being open on their inner sides, and a shaft supporting bar having tapered end walls fitting said tapered seats.

4. In a crusher, an annular crusher frame member, raised portions on diametrically opposite sides having upwardly inclined walls providing tapered seats open at their inner sides, a shaft supporting bar havmg wedge shaped end portions coiiperating wit said seats and arc-shaped walls on the lower side of said bar cooperating with the inner wall of the frame member and a gyratory shaft suspended from said bar.

5. In a crusher, an annular crusher frame member, and a shaft supporting bar having a central shaft bearing, said frame member having diametrically arranged tapered seats and said bar wedge-shaped ends fitting said seats, said seats projectlng above the lower portion of the shaft bearing and a gyratory shaft suspended from said bearing.

6. In a crusher, an annular crusher frame member having vertically flaring seats, the walls of said seats being faced with a softer metal, a shaft supporting bar having wedgeshaped ends coacting with said seats, and means acting vertically on said ends for forcing them into the seats.

In a gyratory crusher, an annular crusher frame member having vertically flaring seats, a shaft supporting bar havin wedge-shaped ends coiiperating with sai seats, a gyratory shaft suspended from said bar, vertically acting means for forcing the said ends into the seats, the walls or bottoms.

of saidv seats having 0 enings for the admission ofmeans to e ect removal of the ends of the bar.

In testimony whereof I afiix my signature.

LEWIS JULIUS HEWES. 

